Home / 85,981.14-128,894.76-33,378.12

Finding the Fourth Proportional to 85,981.14, 128,894.76 and 33,378.12

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Solution

The fourth proportional to 85,981.14, 128,894.76 and 33,378.12 is: 50,037.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,981.14 : 128,894.76 = 33,378.12 : x
  2. Step 2: Convert to fraction form
    85,981.14/128,894.76 = 33,378.12/x
  3. Step 3: Cross multiply
    85,981.14x = 128,894.76 × 33,378.12
  4. Step 4: Simplify right side
    85,981.14x = 4,302,264,766.65
  5. Step 5: Solve for x
    x = 4,302,264,766.65/85,981.14
  6. Step 6: Final answer
    x = 50,037.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.